First Law of Thermodynamics Definition

Chemistry Glossary Definition of First Law of Thermodynamics

First Law of Thermodynamics Definition: The law which states that the total energy of a system and its surroundings remain constant.

Alternate Definition: The change in the energy of a system equals the heat flow in the system from the surroundings minus the work done by the system on the surroundings. Also known as the Law of Conservation of Energy.

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Helmenstine, Anne Marie, Ph.D. "First Law of Thermodynamics Definition." ThoughtCo, Mar. 16, 2017, thoughtco.com/first-law-of-thermodynamics-definition-604343. Helmenstine, Anne Marie, Ph.D. (2017, March 16). First Law of Thermodynamics Definition. Retrieved from https://www.thoughtco.com/first-law-of-thermodynamics-definition-604343 Helmenstine, Anne Marie, Ph.D. "First Law of Thermodynamics Definition." ThoughtCo. https://www.thoughtco.com/first-law-of-thermodynamics-definition-604343 (accessed May 21, 2018).